*{
    margin:0;
    padding:0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: #000;
}
ul {
    list-style: none;
}
.loading {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: #ccc;
    text-align: center;
    line-height: 100vh;
    z-index:99;
}
.loading i {
    font-size: 100px;
    color: #000;
}
